LFXTAL069804

Overview

The LFXTAL069804 is a surface-mount crystal oscillator manufactured by IQD Frequency Products. It operates at a nominal frequency of 12 MHz with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 40 Ohms. The component belongs to the HC49/4HSMX series, utilizing fundamental mode operation. It features a frequency stability and tolerance of ±30 ppm. The device is designed for surface mount installation within a temperature range of -40°C to +85°C. Physical dimensions are 13.40 mm in length, 4.90 mm in width, and a maximum height of 4.30 mm.

Feature Summary

• Fundamental mode quartz crystal resonator designed for precision timing applications.
• Surface mount package configuration compatible with automated assembly processes.
• Operational stability maintained across extended industrial temperature ranges.

Applications

• Microcontroller clock input circuits
• Communication interface synchronization
• Digital signal processing timing references

Procurement Notes

Verify the specific ordering suffix required for tape and reel packaging against project specifications. Confirm RoHS compliance status and REACH registration details prior to final procurement decisions. Ensure the selected variant matches the required moisture sensitivity level and storage conditions defined in the official datasheet documentation.

Selection Notes

Select this component when a 12 MHz fundamental frequency with 18 pF load capacitance is required. The 40 Ohm ESR value must align with the oscillator circuit design constraints. Verify that the HC49/4HSMX footprint fits the PCB layout and that the operating temperature range meets environmental requirements.

Part Context

This part is part of the HC49/4HSMX series from IQD Frequency Products. It serves as a standard surface-mount alternative to through-hole HC-49/U crystals. The series provides reliable frequency control for digital systems requiring compact form factors and stable oscillation characteristics.

Replacement Considerations

Direct substitutes include other 12 MHz SMD crystals with identical 18 pF load capacitance and similar physical dimensions. Verify pin compatibility and electrical parameters before substitution.